TITLE:
Study of the Double Fluorescence of a New Anthracene (13)aneN4
AUTHORS:
Rim Zaari Jabri, Alla Lemeune, Abdellah Zrineh, Franck Denat
KEYWORDS:
Tetraazacycloalcane, Fluorescence, Charge Transfer, pH Sensor, Double Fluorescence, Anthracene, Metals Coordination
JOURNAL NAME:
Open Access Library Journal,
Vol.10 No.9,
September
13,
2023
ABSTRACT: In this work, a new ligand (13)aneN4 with anthracene was synthesized and characterized by mass spectrometry, NMR, UV-Vis and fluorescence spectroscopies. The ligand has a double fluorescence explained by the presence of a photoinduced charge transfer. The fluorescence spectra in various solvents show an increase in the intensity of the band charge transfer with solvent polarity and a decrease in the intensity of the band of the locally excited state of anthracene. The fluorescence studies was also performed in order to study the influence of pH on the charge transfer band, therefore, the ligand can be considered as “pH sensor” in the pH range (10 - 11). Finally, we show that the dual fluorescence intensity of the complex L-metal could be influenced by the coordination of the exocyclic nitrogen atom to the central metal.